package com.minhang.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * 用来获取springboot创建好的工厂
 * @author rookie
 */
@Component
public class ApplicationContextUtils implements ApplicationContextAware {

    /**
     * //保留下来工厂
     */
    private static ApplicationContext applicationContext;

    /**
     * //将创建好工厂以参数形式传递给这个类
     * @param applicationContext
     * @throws BeansException
     */
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        ApplicationContextUtils.applicationContext = applicationContext;
    }


    /**
     * //提供在工厂中获取对象的方法
     * @param beanName
     * @return
     */
    public static Object getBean(String beanName){
        return applicationContext.getBean(beanName);
    }

}
